[SignaledDeadlineTask] Introduce a signaled deadline task class

This is a task that executes a user-defined function at specific time points, or when signaled. This class is designed to be used in situations where a task needs to be executed within specific deadlines, irregularly. The task will wake up at the specified time points and execute the user-defined function. The task can also be signaled to wake up and run immediately, regardless of the time points.